Explanation:
divide the distance by the time it takes to travel that same distance, then add your direction to it.
Or change in displacement divided by change in time.
Answer: It may be unreliable.
Explanation:
Harnessing wind a s a source of energy is very efficient and renewable. It does not produce any waste and is environment friendly energy resource because it is naturally occurring.
But it is unreliable. The wind is the motion of air from high pressure region to low pressure region. Thus, we cannot start or stop wind turbines to spin. It depends on the wind and its speed.
Pressure is define as force per unit area. Mathematically expressed as,
P=F/A.
We are given, a mass of the ball equal to
m=1.6kg and an Area of 1.1cm2=1.1(
)m2
To calculate for the force exerted by the finger to the ball, it is simply equal to the weight of the ball. Mathematically,
F=W
Weight of the ball can be calculated as,
W= ma
where m=mass of the object and a is the acceleration due to gravity (9.8m/s).
Then, the Weight of the ball which is equalt to the force exerted by the finger,
W=F=(1.6 kg x 9.81)=15.696 N
Then Pressure would be,
P=(15.696N/1.1(.1(
)m2))
P=
142690.91 N/m2=142690.91 Pa